RSpec場景重構

Question

有一些RSpec集成測試：

require 'spec_helper'

feature 'Authentication', js: true do
  scenario 'Successfully Sign In' do
    user = create(:user)
    visit '/admin/signin'
    expect(page).to have_content('Login to Admin Panel')
    fill_in 'Email', with: user.email
    fill_in 'Password', with: user.password
    click_button 'Login'
    expect(page).to have_content('Welcome to the administrative panel of "Hotels" service!')
  end

  scenario 'Failed Sign In' do
    user = create(:user)
    visit '/admin/signin'
    expect(page).to have_content('Login to Admin Panel')
    fill_in 'Email', with: user.email + '_wrong'
    fill_in 'Password', with: user.password
    click_button 'Login'
    expect(page).to have_content('Invalid username/password')
  end

  scenario 'Repeated Sign In' do
    user = create(:user)
    visit '/admin/signin'
    expect(page).to have_content('Login to Admin Panel')
    fill_in 'Email', with: user.email
    fill_in 'Password', with: user.password
    click_button 'Login'
    visit '/admin/signin'
    expect(page).to have_content('Welcome to the administrative panel of "Hotels" service!')
  end

  scenario 'Sign Out' do
    user = create(:user)
    visit '/admin/signin'
    expect(page).to have_content('Login to Admin Panel')
    fill_in 'Email', with: user.email
    fill_in 'Password', with: user.password
    click_button 'Login'
    click_link 'Sign out'
    expect(page).to have_content('Login to Admin Panel')    
  end
end

如您所見，這些測試非常相似，我希望能夠重構它。 我聽說過shared_examples，但是我不了解場景中的這個概念。 請給我一些建議，以改善我的功能測試。 謝謝！

Answer 1

我會將這些重復的代碼放在這樣的/ spec / support /下的幫助文件中

module Features
  module SessionHelpers
    def sign_in(email, password)  
    visit '/admin/signin'
    expect(page).to have_content('Login to Admin Panel')
    fill_in 'Email', with: email
    fill_in 'Password', with: password
    click_button 'Login'
    end
  end
end

並在每種情況下都調用該方法

scenario 'Successfully Sign In' do
   user = create(:user)
   sign_in(user.email, user.password)
   expect(page).to have_content('Welcome to the administrative panel of "Hotels" service!')
end

Answer 2

除了@Pavan答案之外，在這種情況下，您絕對應該before :each使用，因此您的整個測試將是這樣的：

feature 'Authentication', js: true do
   before :each do
      user = create(:user)
      sign_in(user.email, user.password)
   end

   scenario 'Successfully Sign In' do
      expect(page).to have_content('Welcome to the administrative panel of "Hotels" service!')
   end

   scenario 'Repeated Sign In' do
      visit '/admin/signin'
      expect(page).to have_content('Welcome to the administrative panel of "Hotels" service!')
   end

   scenario 'Sign Out' do
      click_link 'Sign out'
      expect(page).to have_content('Login to Admin Panel')    
   end
 end

您可以在此處在鈎子之前/之后閱讀更多有關Rspec的信息